Sorry, I was lazy. When I first joined this forum, I had been out of factory work for months and occupied some of my time actually researching and thinking, so during my first few months here I had done my homework at least part of the time before I spoke up - and then I found new work, and got progressively intellectually lazy. Still, no excuse, especially since I'm on temporary lay-off right now (it took its sweet time coming) and have no excuse for not taking the time to do my homework before shooting from the lip. I do stand corrected.